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ffee9210 |
| 24-Sep-2013 |
Mauro Carvalho Chehab <m.chehab@samsung.com> |
Merge tag 'v3.12-rc2' into patchwork
Linux 3.12-rc2
* tag 'v3.12-rc2': (10774 commits) Linux 3.12-rc2 cfq: explicitly use 64bit divide operation for 64bit arguments block: Add nr_bios to bloc
Merge tag 'v3.12-rc2' into patchwork
Linux 3.12-rc2
* tag 'v3.12-rc2': (10774 commits) Linux 3.12-rc2 cfq: explicitly use 64bit divide operation for 64bit arguments block: Add nr_bios to block_rq_remap tracepoint Btrfs: create the uuid tree on remount rw btrfs: change extent-same to copy entire argument struct Btrfs: dir_inode_operations should use btrfs_update_time also btrfs: Add btrfs: prefix to kernel log output btrfs: refuse to remount read-write after abort Btrfs: btrfs_ioctl_default_subvol: Revert back to toplevel subvolume when arg is 0 Btrfs: don't leak transaction in btrfs_sync_file() Btrfs: add the missing mutex unlock in write_all_supers() Btrfs: iput inode on allocation failure Btrfs: remove space_info->reservation_progress Btrfs: kill delay_iput arg to the wait_ordered functions Btrfs: fix worst case calculator for space usage Revert "Btrfs: rework the overcommit logic to be based on the total size" Btrfs: improve replacing nocow extents Btrfs: drop dir i_size when adding new names on replay Btrfs: replay dir_index items before other items Btrfs: check roots last log commit when checking if an inode has been logged ...
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#
b599c89e |
| 24-Sep-2013 |
Daniel Vetter <daniel.vetter@ffwll.ch> |
Merge tag 'v3.12-rc2' into drm-intel-next
Backmerge Linux 3.12-rc2 to prep for a bunch of -next patches: - Header cleanup in intel_drv.h, both changed in -fixes and my current -next pile. - Cursor
Merge tag 'v3.12-rc2' into drm-intel-next
Backmerge Linux 3.12-rc2 to prep for a bunch of -next patches: - Header cleanup in intel_drv.h, both changed in -fixes and my current -next pile. - Cursor handling cleanup for -next which depends upon the cursor handling fix merged into -rc2.
All just trivial conflicts of the "changed adjacent lines" type: drivers/gpu/drm/i915/i915_gem.c drivers/gpu/drm/i915/intel_display.c drivers/gpu/drm/i915/intel_drv.h
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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40a0c68c |
| 20-Sep-2013 |
Ingo Molnar <mingo@kernel.org> |
Merge branch 'sched/urgent' into sched/core
Merge in the latest fixes before applying a dependent patch.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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43cdd088 |
| 19-Sep-2013 |
Takashi Iwai <tiwai@suse.de> |
Merge branch 'for-linus' into for-next
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4ba25a49 |
| 18-Sep-2013 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge tag 'v3.11' into next
Merge with mainline to bring in sync changes to cyttsp4 driver.
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a35c6322 |
| 09-Sep-2013 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver update from Kevin Hilman: "This contains the ARM SoC related driver updates for v3.12.
Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver update from Kevin Hilman: "This contains the ARM SoC related driver updates for v3.12. The only thing this cycle are core PM updates and CPUidle support for ARM's TC2 big.LITTLE development platform"
* tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: cpuidle: big.LITTLE: vexpress-TC2 CPU idle driver ARM: vexpress: tc2: disable GIC CPU IF in tc2_pm_suspend drivers: irq-chip: irq-gic: introduce gic_cpu_if_down()
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3bc4f399 |
| 04-Sep-2013 |
Alex Williamson <alex.williamson@redhat.com> |
Merge remote branch 'origin/master' into next-merge
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40031da4 |
| 03-Sep-2013 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'pm+acpi-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael Wysocki:
1) ACPI-based PCI hotplug (ACPIPHP) subsys
Merge tag 'pm+acpi-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael Wysocki:
1) ACPI-based PCI hotplug (ACPIPHP) subsystem rework and introduction of Intel Thunderbolt support on systems that use ACPI for signalling Thunderbolt hotplug events. This also should make ACPIPHP work in some cases in which it was known to have problems. From Rafael J Wysocki, Mika Westerberg and Kirill A Shutemov.
2) ACPI core code cleanups and dock station support cleanups from Jiang Liu and Rafael J Wysocki.
3) Fixes for locking problems related to ACPI device hotplug from Rafael J Wysocki.
4) ACPICA update to version 20130725 includig fixes, cleanups, support for more than 256 GPEs per GPE block and a change to make the ACPI PM Timer optional (we've seen systems without the PM Timer in the field already). One of the fixes, related to the DeRefOf operator, is necessary to prevent some Windows 8 oriented AML from causing problems to happen. From Bob Moore, Lv Zheng, and Jung-uk Kim.
5) Removal of the old and long deprecated /proc/acpi/event interface and related driver changes from Thomas Renninger.
6) ACPI and Xen changes to make the reduced hardware sleep work with the latter from Ben Guthro.
7) ACPI video driver cleanups and a blacklist of systems that should not tell the BIOS that they are compatible with Windows 8 (or ACPI backlight and possibly other things will not work on them). From Felipe Contreras.
8) Assorted ACPI fixes and cleanups from Aaron Lu, Hanjun Guo, Kuppuswamy Sathyanarayanan, Lan Tianyu, Sachin Kamat, Tang Chen, Toshi Kani, and Wei Yongjun.
9) cpufreq ondemand governor target frequency selection change to reduce oscillations between min and max frequencies (essentially, it causes the governor to choose target frequencies proportional to load) from Stratos Karafotis.
10) cpufreq fixes allowing sysfs attributes file permissions to be preserved over suspend/resume cycles Srivatsa S Bhat.
11) Removal of Device Tree parsing for CPU device nodes from multiple cpufreq drivers that required some changes related to of_get_cpu_node() to be made in a few architectures and in the driver core. From Sudeep KarkadaNagesha.
12) cpufreq core fixes and cleanups related to mutual exclusion and driver module references from Viresh Kumar, Lukasz Majewski and Rafael J Wysocki.
13) Assorted cpufreq fixes and cleanups from Amit Daniel Kachhap, Bartlomiej Zolnierkiewicz, Hanjun Guo, Jingoo Han, Joseph Lo, Julia Lawall, Li Zhong, Mark Brown, Sascha Hauer, Stephen Boyd, Stratos Karafotis, and Viresh Kumar.
14) Fixes to prevent race conditions in coupled cpuidle from happening from Colin Cross.
15) cpuidle core fixes and cleanups from Daniel Lezcano and Tuukka Tikkanen.
16) Assorted cpuidle fixes and cleanups from Daniel Lezcano, Geert Uytterhoeven, Jingoo Han, Julia Lawall, Linus Walleij, and Sahara.
17) System sleep tracing changes from Todd E Brandt and Shuah Khan.
18) PNP subsystem conversion to using struct dev_pm_ops for power management from Shuah Khan.
* tag 'pm+acpi-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (217 commits) cpufreq: Don't use smp_processor_id() in preemptible context cpuidle: coupled: fix race condition between pokes and safe state cpuidle: coupled: abort idle if pokes are pending cpuidle: coupled: disable interrupts after entering safe state ACPI / hotplug: Remove containers synchronously driver core / ACPI: Avoid device hot remove locking issues cpufreq: governor: Fix typos in comments cpufreq: governors: Remove duplicate check of target freq in supported range cpufreq: Fix timer/workqueue corruption due to double queueing ACPI / EC: Add ASUSTEK L4R to quirk list in order to validate ECDT ACPI / thermal: Add check of "_TZD" availability and evaluating result cpufreq: imx6q: Fix clock enable balance ACPI: blacklist win8 OSI for buggy laptops cpufreq: tegra: fix the wrong clock name cpuidle: Change struct menu_device field types cpuidle: Add a comment warning about possible overflow cpuidle: Fix variable domains in get_typical_interval() cpuidle: Fix menu_device->intervals type cpuidle: CodingStyle: Break up multiple assignments on single line cpuidle: Check called function parameter in get_typical_interval() ...
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Revision tags: v3.11 |
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bf550fc9 |
| 28-Aug-2013 |
Alexander Graf <agraf@suse.de> |
Merge remote-tracking branch 'origin/next' into kvm-ppc-next
Conflicts: mm/Kconfig
CMA DMA split and ZSWAP introduction were conflicting, fix up manually.
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aaf75e45 |
| 28-Aug-2013 |
Olof Johansson <olof@lixom.net> |
Merge branch 'cpuidle/biglittle' into next/drivers
From Lorenzo Pieralisi: This patch series contains:
- GIC driver update to add a method to disable the GIC CPU IF - TC2 MCPM update to add GIC CPU
Merge branch 'cpuidle/biglittle' into next/drivers
From Lorenzo Pieralisi: This patch series contains:
- GIC driver update to add a method to disable the GIC CPU IF - TC2 MCPM update to add GIC CPU disabling to suspend method - TC2 CPU idle big.LITTLE driver
* cpuidle/biglittle: cpuidle: big.LITTLE: vexpress-TC2 CPU idle driver ARM: vexpress: tc2: disable GIC CPU IF in tc2_pm_suspend drivers: irq-chip: irq-gic: introduce gic_cpu_if_down() ARM: vexpress/TC2: implement PM suspend method ARM: vexpress/TC2: basic PM support ARM: vexpress: Add SCC to V2P-CA15_A7's device tree ARM: vexpress/TC2: add Serial Power Controller (SPC) support ARM: vexpress/dcscb: fix cache disabling sequences
Signed-off-by: Olof Johansson <olof@lixom.net>
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Revision tags: v3.11-rc7, v3.11-rc6, v3.11-rc5, v3.11-rc4, v3.11-rc3, v3.11-rc2, v3.11-rc1, v3.10, v3.10-rc7, v3.10-rc6 |
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#
14d2c34c |
| 12-Jun-2013 |
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> |
cpuidle: big.LITTLE: vexpress-TC2 CPU idle driver
The big.LITTLE architecture is composed of two clusters of cpus. One cluster contains less powerful but more energy efficient processors and the oth
cpuidle: big.LITTLE: vexpress-TC2 CPU idle driver
The big.LITTLE architecture is composed of two clusters of cpus. One cluster contains less powerful but more energy efficient processors and the other cluster groups the powerful but energy-intensive cpus.
The TC2 testchip implements two clusters of CPUs (A7 and A15 clusters in a big.LITTLE configuration) connected through a CCI interconnect that manages coherency of their respective L2 caches and intercluster distributed virtual memory messages (DVM).
TC2 testchip integrates a power controller that manages cores resets, wake-up IRQs and cluster low-power states. Power states are managed at cluster level, which means that voltage is removed from a cluster iff all cores in a cluster are in a wfi state. Single cores can enter a reset state which is identical to wfi in terms of power consumption but simplifies the way cluster states are entered.
This patch provides a multiple driver CPU idle implementation for TC2 which paves the way for a generic big.LITTLE idle driver for all upcoming big.LITTLE based systems on chip.
The driver relies on the MCPM infrastructure to coordinate and manage core power states; in particular MCPM allows to suspend specific cores and hides the CPUs coordination required to shut-down clusters of CPUs.
Power down sequences for the respective clusters are implemented in the MCPM TC2 backend, with all code needed to clean caches and exit coherency.
The multiple driver CPU idle infrastructure allows to define different C-states for big and little cores, determined at boot by checking the part id of the possible CPUs and initializing the respective logical masks in the big and little drivers.
Current big.little systems are composed of A7 and A15 clusters, as implemented in TC2, but in the future that may change and the driver will have evolve to retrieve what is a 'big' cpu and what is a 'little' cpu in order to build the correct topology.
Cc: Kevin Hilman <khilman@linaro.org> Cc: Amit Kucheria <amit.kucheria@linaro.org> Cc: Olof Johansson <olof@lixom.net> Cc: Nicolas Pitre <nicolas.pitre@linaro.org> Cc: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Olof Johansson <olof@lixom.net>
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#
c7878810 |
| 26-Aug-2013 |
Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
Merge branch 'pm-cpuidle'
* pm-cpuidle: (25 commits) cpuidle: Change struct menu_device field types cpuidle: Add a comment warning about possible overflow cpuidle: Fix variable domains in get_
Merge branch 'pm-cpuidle'
* pm-cpuidle: (25 commits) cpuidle: Change struct menu_device field types cpuidle: Add a comment warning about possible overflow cpuidle: Fix variable domains in get_typical_interval() cpuidle: Fix menu_device->intervals type cpuidle: CodingStyle: Break up multiple assignments on single line cpuidle: Check called function parameter in get_typical_interval() cpuidle: Rearrange code and comments in get_typical_interval() cpuidle: Ignore interval prediction result when timer is shorter cpuidle-kirkwood.c: simplify use of devm_ioremap_resource() cpuidle: kirkwood: Make kirkwood_cpuidle_remove function static cpuidle: calxeda: Add missing __iomem annotation SH: cpuidle: Add missing parameter for cpuidle_register() ARM: ux500: cpuidle: Move ux500 cpuidle driver to drivers/cpuidle ARM: ux500: cpuidle: Remove pointless include ARM: ux500: cpuidle: Instantiate the driver from platform device ARM: davinci: cpuidle: Fix target residency cpuidle: Add Kconfig.arm and move calxeda, kirkwood and zynq cpuidle: Check if device is already registered cpuidle: Introduce __cpuidle_device_init() cpuidle: Introduce __cpuidle_unregister_device() ...
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ee3e542f |
| 15-Aug-2013 |
Sage Weil <sage@inktank.com> |
Merge remote-tracking branch 'linus/master' into testing
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ee42f75d |
| 14-Aug-2013 |
Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
Merge back earlier 'pm-cpuidle' material.
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9aadfa8f |
| 27-Jul-2013 |
Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
Merge branch 'cpuidle-arm' into pm-cpuidle
* cpuidle-arm: ARM: ux500: cpuidle: Move ux500 cpuidle driver to drivers/cpuidle ARM: ux500: cpuidle: Remove pointless include ARM: ux500: cpuidle: I
Merge branch 'cpuidle-arm' into pm-cpuidle
* cpuidle-arm: ARM: ux500: cpuidle: Move ux500 cpuidle driver to drivers/cpuidle ARM: ux500: cpuidle: Remove pointless include ARM: ux500: cpuidle: Instantiate the driver from platform device ARM: davinci: cpuidle: Fix target residency cpuidle: Add Kconfig.arm and move calxeda, kirkwood and zynq
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#
be100ee8 |
| 27-Jul-2013 |
Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
Merge branch 'cpuidle/arm-next' of git://git.linaro.org/people/dlezcano/linux into cpuidle-arm
Pull ARM cpuidle updates from Daniel Lezcano.
* 'cpuidle/arm-next' of git://git.linaro.org/people/dlez
Merge branch 'cpuidle/arm-next' of git://git.linaro.org/people/dlezcano/linux into cpuidle-arm
Pull ARM cpuidle updates from Daniel Lezcano.
* 'cpuidle/arm-next' of git://git.linaro.org/people/dlezcano/linux: ARM: ux500: cpuidle: Move ux500 cpuidle driver to drivers/cpuidle ARM: ux500: cpuidle: Remove pointless include ARM: ux500: cpuidle: Instantiate the driver from platform device ARM: davinci: cpuidle: Fix target residency cpuidle: Add Kconfig.arm and move calxeda, kirkwood and zynq
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d3f2950f |
| 10-Jul-2013 |
Daniel Lezcano <daniel.lezcano@linaro.org> |
ARM: ux500: cpuidle: Move ux500 cpuidle driver to drivers/cpuidle
There is no more dependency with arch/arm headers, so we can safely move the driver to the drivers/cpuidle directory.
Signed-off-by
ARM: ux500: cpuidle: Move ux500 cpuidle driver to drivers/cpuidle
There is no more dependency with arch/arm headers, so we can safely move the driver to the drivers/cpuidle directory.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org>
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b98e01ad |
| 03-Jul-2013 |
Sahara <keun-o.park@windriver.com> |
cpuidle: Add Kconfig.arm and move calxeda, kirkwood and zynq
Add Kconfig.arm for ARM cpuidle drivers and moves calxeda, kirkwood and zynq to Kconfig.arm. Like in the cpufreq menu, "CPU Idle" menu i
cpuidle: Add Kconfig.arm and move calxeda, kirkwood and zynq
Add Kconfig.arm for ARM cpuidle drivers and moves calxeda, kirkwood and zynq to Kconfig.arm. Like in the cpufreq menu, "CPU Idle" menu is added to drivers/cpuidle/Kconfig.
Signed-off-by: Sahara <keun-o.park@windriver.com>
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cb54b53a |
| 25-Jul-2013 |
Daniel Vetter <daniel.vetter@ffwll.ch> |
Merge commit 'Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux'
This backmerges Linus' merge commit of the latest drm-fixes pull:
commit 549f3a1218ba18fcde11ef0e22b07e6365645
Merge commit 'Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux'
This backmerges Linus' merge commit of the latest drm-fixes pull:
commit 549f3a1218ba18fcde11ef0e22b07e6365645788 Merge: 42577ca 058ca4a Author: Linus Torvalds <torvalds@linux-foundation.org> Date: Tue Jul 23 15:47:08 2013 -0700
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
We've accrued a few too many conflicts, but the real reason is that I want to merge the 100% solution for Haswell concurrent registers writes into drm-intel-next. But that depends upon the 90% bandaid merged into -fixes:
commit a7cd1b8fea2f341b626b255d9898a5ca5fabbf0a Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Fri Jul 19 20:36:51 2013 +0100
drm/i915: Serialize almost all register access
Also, we can roll up on accrued conflicts.
Usually I'd backmerge a tagged -rc, but I want to get this done before heading off to vacations next week ;-)
Conflicts: drivers/gpu/drm/i915/i915_dma.c drivers/gpu/drm/i915/i915_gem.c
v2: For added hilarity we have a init sequence conflict around the gt_lock, so need to move that one, too. Spotted by Jani Nikula.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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a3f86127 |
| 25-Jul-2013 |
Jiri Kosina <jkosina@suse.cz> |
Merge branch 'master' into for-next
Sync with Linus' master to be able to apply trivial patche to newer code.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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566c1d0a |
| 21-Jul-2013 |
Mauro Carvalho Chehab <m.chehab@samsung.com> |
Merge tag 'v3.11-rc2' into patchwork
Linux 3.11-rc2
* tag 'v3.11-rc2': (9535 commits) Linux 3.11-rc2 ext3: fix a BUG when opening a file with O_TMPFILE flag ext4: fix a BUG when opening a fil
Merge tag 'v3.11-rc2' into patchwork
Linux 3.11-rc2
* tag 'v3.11-rc2': (9535 commits) Linux 3.11-rc2 ext3: fix a BUG when opening a file with O_TMPFILE flag ext4: fix a BUG when opening a file with O_TMPFILE flag vfs: constify dentry parameter in d_count() livelock avoidance in sget() allow O_TMPFILE to work with O_WRONLY Btrfs: fix wrong write offset when replacing a device Btrfs: re-add root to dead root list if we stop dropping it Btrfs: fix lock leak when resuming snapshot deletion Btrfs: update drop progress before stopping snapshot dropping arm64: use common reboot infrastructure arm64: mm: don't treat user cache maintenance faults as writes arm64: add '#ifdef CONFIG_COMPAT' for aarch32_break_handler() arm64: Only enable local interrupts after the CPU is marked online MIPS: kvm: Kconfig: Drop HAVE_KVM dependency from VIRTUALIZATION um: remove dead code um: siginfo cleanup MIPS: Octeon: Fix DT pruning bug with pip ports uml: Fix which_tmpdir failure when /dev/shm is a symlink, and in other edge cases um: Fix wait_stub_done() error handling ...
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e43fff2b |
| 19-Jul-2013 |
Ingo Molnar <mingo@kernel.org> |
Merge branch 'linus' into perf/core
Merge in a v3.11-rc1-ish branch to go from v3.10 based development to a v3.11 based one.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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f4b96f5e |
| 12-Jul-2013 |
Olof Johansson <olof@lixom.net> |
Merge tag 'omap-for-v3.11/fixes-for-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Omap fixes and minor defconfig updates that would be good to get in be
Merge tag 'omap-for-v3.11/fixes-for-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Omap fixes and minor defconfig updates that would be good to get in before -rc1.
* tag 'omap-for-v3.11/fixes-for-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: OMAP2+: omap2plus_defconfig: Enable appended DTB support ARM: OMAP2+: Enable TI_EDMA in omap2plus_defconfig ARM: OMAP2+: omap2plus_defconfig: enable DRA752 thermal support by default ARM: OMAP2+: omap2plus_defconfig: enable TI bandgap driver ARM: OMAP2+: devices: remove duplicated include from devices.c ARM: OMAP3: igep0020: Set DSS pins in correct mux mode. ARM: OMAP2+: N900: enable N900-specific drivers even if device tree is enabled ARM: OMAP2+: Cocci spatch "ptr_ret.spatch" ARM: OMAP2+: Remove obsolete Makefile line ARM: OMAP5: Enable Cortex A15 errata 798181 ARM: scu: provide inline dummy functions when SCU is not present ARM: OMAP4: sleep: build OMAP4 specific functions only for OMAP4 ARM: OMAP2+: timer: initialize before using oh_name
Signed-off-by: Olof Johansson <olof@lixom.net>
Add/move/change conflicts in arch/arm/mach-omap2/Kconfig resolved.
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f2006e27 |
| 12-Jul-2013 |
Thomas Gleixner <tglx@linutronix.de> |
Merge branch 'linus' into timers/urgent
Get upstream changes so we can apply fixes against them
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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f991fae5 |
| 03-Jul-2013 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'pm+acpi-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI updates from Rafael Wysocki: "This time the total number of ACPI commits
Merge tag 'pm+acpi-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI updates from Rafael Wysocki: "This time the total number of ACPI commits is slightly greater than the number of cpufreq commits, but Viresh Kumar (who works on cpufreq) remains the most active patch submitter.
To me, the most significant change is the addition of offline/online device operations to the driver core (with the Greg's blessing) and the related modifications of the ACPI core hotplug code. Next are the freezer updates from Colin Cross that should make the freezing of tasks a bit less heavy weight.
We also have a couple of regression fixes, a number of fixes for issues that have not been identified as regressions, two new drivers and a bunch of cleanups all over.
Highlights:
- Hotplug changes to support graceful hot-removal failures.
It sometimes is necessary to fail device hot-removal operations gracefully if they cannot be carried out completely. For example, if memory from a memory module being hot-removed has been allocated for the kernel's own use and cannot be moved elsewhere, it's desirable to fail the hot-removal operation in a graceful way rather than to crash the kernel, but currenty a success or a kernel crash are the only possible outcomes of an attempted memory hot-removal. Needless to say, that is not a very attractive alternative and it had to be addressed.
However, in order to make it work for memory, I first had to make it work for CPUs and for this purpose I needed to modify the ACPI processor driver. It's been split into two parts, a resident one handling the low-level initialization/cleanup and a modular one playing the actual driver's role (but it binds to the CPU system device objects rather than to the ACPI device objects representing processors). That's been sort of like a live brain surgery on a patient who's riding a bike.
So this is a little scary, but since we found and fixed a couple of regressions it caused to happen during the early linux-next testing (a month ago), nobody has complained.
As a bonus we remove some duplicated ACPI hotplug code, because the ACPI-based CPU hotplug is now going to use the common ACPI hotplug code.
- Lighter weight freezing of tasks.
These changes from Colin Cross and Mandeep Singh Baines are targeted at making the freezing of tasks a bit less heavy weight operation. They reduce the number of tasks woken up every time during the freezing, by using the observation that the freezer simply doesn't need to wake up some of them and wait for them all to call refrigerator(). The time needed for the freezer to decide to report a failure is reduced too.
Also reintroduced is the check causing a lockdep warining to trigger when try_to_freeze() is called with locks held (which is generally unsafe and shouldn't happen).
- cpufreq updates
First off, a commit from Srivatsa S Bhat fixes a resume regression introduced during the 3.10 cycle causing some cpufreq sysfs attributes to return wrong values to user space after resume. The fix is kind of fresh, but also it's pretty obvious once Srivatsa has identified the root cause.
Second, we have a new freqdomain_cpus sysfs attribute for the acpi-cpufreq driver to provide information previously available via related_cpus. From Lan Tianyu.
Finally, we fix a number of issues, mostly related to the CPUFREQ_POSTCHANGE notifier and cpufreq Kconfig options and clean up some code. The majority of changes from Viresh Kumar with bits from Jacob Shin, Heiko Stübner, Xiaoguang Chen, Ezequiel Garcia, Arnd Bergmann, and Tang Yuantian.
- ACPICA update
A usual bunch of updates from the ACPICA upstream.
During the 3.4 cycle we introduced support for ACPI 5 extended sleep registers, but they are only supposed to be used if the HW-reduced mode bit is set in the FADT flags and the code attempted to use them without checking that bit. That caused suspend/resume regressions to happen on some systems. Fix from Lv Zheng causes those registers to be used only if the HW-reduced mode bit is set.
Apart from this some other ACPICA bugs are fixed and code cleanups are made by Bob Moore, Tomasz Nowicki, Lv Zheng, Chao Guan, and Zhang Rui.
- cpuidle updates
New driver for Xilinx Zynq processors is added by Michal Simek.
Multidriver support simplification, addition of some missing kerneldoc comments and Kconfig-related fixes come from Daniel Lezcano.
- ACPI power management updates
Changes to make suspend/resume work correctly in Xen guests from Konrad Rzeszutek Wilk, sparse warning fix from Fengguang Wu and cleanups and fixes of the ACPI device power state selection routine.
- ACPI documentation updates
Some previously missing pieces of ACPI documentation are added by Lv Zheng and Aaron Lu (hopefully, that will help people to uderstand how the ACPI subsystem works) and one outdated doc is updated by Hanjun Guo.
- Assorted ACPI updates
We finally nailed down the IA-64 issue that was the reason for reverting commit 9f29ab11ddbf ("ACPI / scan: do not match drivers against objects having scan handlers"), so we can fix it and move the ACPI scan handler check added to the ACPI video driver back to the core.
A mechanism for adding CMOS RTC address space handlers is introduced by Lan Tianyu to allow some EC-related breakage to be fixed on some systems.
A spec-compliant implementation of acpi_os_get_timer() is added by Mika Westerberg.
The evaluation of _STA is added to do_acpi_find_child() to avoid situations in which a pointer to a disabled device object is returned instead of an enabled one with the same _ADR value. From Jeff Wu.
Intel BayTrail PCH (Platform Controller Hub) support is added to the ACPI driver for Intel Low-Power Subsystems (LPSS) and that driver is modified to work around a couple of known BIOS issues. Changes from Mika Westerberg and Heikki Krogerus.
The EC driver is fixed by Vasiliy Kulikov to use get_user() and put_user() instead of dereferencing user space pointers blindly.
Code cleanups are made by Bjorn Helgaas, Nicholas Mazzuca and Toshi Kani.
- Assorted power management updates
The "runtime idle" helper routine is changed to take the return values of the callbacks executed by it into account and to call rpm_suspend() if they return 0, which allows us to reduce the overall code bloat a bit (by dropping some code that's not necessary any more after that modification).
The runtime PM documentation is updated by Alan Stern (to reflect the "runtime idle" behavior change).
New trace points for PM QoS are added by Sahara (<keun-o.park@windriver.com>).
PM QoS documentation is updated by Lan Tianyu.
Code cleanups are made and minor issues are addressed by Bernie Thompson, Bjorn Helgaas, Julius Werner, and Shuah Khan.
- devfreq updates
New driver for the Exynos5-bus device from Abhilash Kesavan.
Minor cleanups, fixes and MAINTAINERS update from MyungJoo Ham, Abhilash Kesavan, Paul Bolle, Rajagopal Venkat, and Wei Yongjun.
- OMAP power management updates
Adaptive Voltage Scaling (AVS) SmartReflex voltage control driver updates from Andrii Tseglytskyi and Nishanth Menon."
* tag 'pm+acpi-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (162 commits) cpufreq: Fix cpufreq regression after suspend/resume ACPI / PM: Fix possible NULL pointer deref in acpi_pm_device_sleep_state() PM / Sleep: Warn about system time after resume with pm_trace cpufreq: don't leave stale policy pointer in cdbs->cur_policy acpi-cpufreq: Add new sysfs attribute freqdomain_cpus cpufreq: make sure frequency transitions are serialized ACPI: implement acpi_os_get_timer() according the spec ACPI / EC: Add HP Folio 13 to ec_dmi_table in order to skip DSDT scan ACPI: Add CMOS RTC Operation Region handler support ACPI / processor: Drop unused variable from processor_perflib.c cpufreq: tegra: call CPUFREQ_POSTCHANGE notfier in error cases cpufreq: s3c64xx: call CPUFREQ_POSTCHANGE notfier in error cases cpufreq: omap: call CPUFREQ_POSTCHANGE notfier in error cases cpufreq: imx6q: call CPUFREQ_POSTCHANGE notfier in error cases cpufreq: exynos: call CPUFREQ_POSTCHANGE notfier in error cases cpufreq: dbx500: call CPUFREQ_POSTCHANGE notfier in error cases cpufreq: davinci: call CPUFREQ_POSTCHANGE notfier in error cases cpufreq: arm-big-little: call CPUFREQ_POSTCHANGE notfier in error cases cpufreq: powernow-k8: call CPUFREQ_POSTCHANGE notfier in error cases cpufreq: pcc: call CPUFREQ_POSTCHANGE notfier in error cases ...
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